Last year, a provocative study was published that stated the “pull-out” method is just as successful as using a condom when it comes to pregnancy prevention. The statistics released claim that this controversial remedy, if practiced consistently during intercourse over the course of one year, is 96% effective, meaning pregnancy occurs about 4% of the time. Compared to condom statistics, there is a mere 2% difference in pregnancy risk, with condoms reporting a 98% effectiveness rating.
Although these are compelling statistics, the withdrawal method is completely ineffective in preventing sexually transmitted infections, as there is no real barrier between the genitals and infection or diseased can be shared, easily.
Unprotected sex is strongly discouraged by the majority of health experts. Condoms tend to be preventative in terms of pregnancy and STDs.
source: http://www.guttmacher.org/pubs/journals/reprints/Contraception79-407-410.pdf
source: http://www.guttmacher.org/pubs/journals/reprints/Contraception79-407-410.pdf